Depends on the house. Houses in WaterColor may all look similar, but the construction quality and design is all over the place. I've seen some well-built homes, and some crap. For Ph II, specific location also plays a large roll in price/value. If you back up to green space, it is a better lot, in my opinion. However, if it backs up to 395 (which also has a touch of greenspace), it is less valuable. If the house is on the busy thru-road, the property is less desirable for many, therefore lower value.
I encourage you to forget about looking solely at price per sq ft, when the lot values and construction differ so greatly. Price per sq ft typically works well for condos in the same building, but for homes, there is so much more to consider.
Have you consulted your Realtor? Are they familiar with homes in WaterColor?